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IDT74CBTLV3861 LOW-VOLTAGE 10-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
LOW-VOLTAGE 10-BIT BUS SWITCH
IDT74CBTLV3861
FEATURES:
- - - - - - - 5 A/B bidirectional switch Isolation Under Power-Off Conditions Over-voltage tolerant Latch-up performance exceeds 100mA VCC = 2.3V - 3.6V, Normal Range ESD > 2000V per MIL-STD-883, Method 3015; > 200V using machine model (C = 200pF, R = 0) Available in SSOP, QSOP, and TSSOP packages
DESCRIPTION:
The CBTLV3861 provides ten bits of high-speed bus switching with low on-state resistance of the switch allowing connections to be made with minimal propagation delay. The device is organized as one 10-bit bus switch. When output enable (OE) is low, the 10-bit bus switch is on and port A is connected to port B. When OE is high, the switch is open and a high-impedance state exists between the two ports. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
APPLICATIONS:
- 3.3V High Speed Bus Switching and Bus Isolation
FUNCTIONAL BLOCK DIAGRAM
SIMPLIFIED SCHEMATIC, EACH SWITCH
A1
2
SW
22
B1
A
A10
11
B
SW
13
B10
23
OE
OE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
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c 2000 Integrated Device Technology, Inc.
DECEMBER 2000
DSC-5741/-
IDT74CBTLV3861 LOW-VOLTAGE 10-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
Symbol VCC Description Supply Voltage Range Input Voltage Range Continuous Channel Current IIK TSTG Input Clamp Current, , VI/O < 0 Storage Temperature Max. -0.5 to 4.6 -0.5 to 4.6 128 -50
(1)
Unit V V mA mA C
NC A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 GND
1 2 3 4 5 6 7 8 9 10 11 12 SO24-7 SO24-8 SO24-9
24 23 22 21 20 19 18 17 16 15 14 13
VCC OE B1 B2 B3 B4 B5 B6 B7 B8 B9 B10
VI
-65 to +150
NOTE: 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
FUNCTION TABLE
Input OE L H
NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level
(1)
Operation A Port = B Port Disconnect
SSOP/ QSOP/ TSSOP TOP VIEW
OPERATING CHARACTERISTICS, TA = 25C
Symbol VCC VIH Parameter Supply Voltage High-Level Control Input Voltage VCC = 2.3V to 2.7V VCC = 2.7V to 3.6V VIL Low-Level Control Input Voltage VCC = 2.3V to 2.7V VCC = 2.7V to 3.6V TA Operating Free-Air Temperature Test Conditions Min. 2.3 1.7 2 -- -- -40 Max. 3.6 -- -- 0.7 0.8 +85 C V Unit V V
NOTE: 1. All unused control inputs of the device must be held at VCC or GND to ensure proper device operation.
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IDT74CBTLV3861 LOW-VOLTAGE 10-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: Operating Condition: TA = - 40C to +85C
Symbol VIK II IOZ IOFF ICC ICC (2) CI CIO(OFF) VCC = 2.3V Typ at VCC = 2.5V
RON (3)
Parameter Control Inputs, Data I/O Control Inputs, Data I/O Data I/O
Test Conditions VCC = 3V, II = -18mA VCC = 3.6V, VI = VCC or GND VCC = 3.6V, VO = 0 or 3.6V, switch disabled VCC = 0, VI or VO = 0 to 3.6V VCC = 3.6V, IO = 0, VI = VCC or GND
Min. -- -- -- -- -- -- -- --
Typ.(1) -- -- -- -- -- -- 4 6 5 5 27 5 5 10
Max. - 1.2 1 5 50 10 300 -- -- 8 8 40 7 7 15
Unit V A A A A A pF pF
Control Inputs Control Inputs
VCC = 3.6V, One input at 3V, Other inputs at VCC or GND VI =3V or 0 VO = 3V or 0, OE = VCC VI = 0 VI = 1.7V VI = 0 IO = 64mA IO = 24mA IO = 15mA IO = 64mA IO = 24mA VI = 2.4V IO = 15mA
-- -- -- -- -- --
VCC = 3V
NOTES: 1. Typical values are at VCC = 3.3V, +25C ambient. 2. The increase in supply current is attributable to each input that is at the specified voltage level rather than VCC or GND. 3. This is measured by the voltage drop between the A and B terminals at the indicated current through the switch.
SWITCHING CHARACTERISTICS
VCC = 2.5V 0.2V Symbol tPD(1) tEN tDIS Parameter Propagation Delay A to B or B to A Output Enable Time OE to A or B Output Disable Time OE to A or B Min. -- 1 1 Max. 0.15 4.5 5 VCC = 3.3V 0.3V Min. -- 1 1 Max. 0.25 4.2 5 Unit ns ns ns
NOTE: 1. The propagation delay is the calculated RC time constant of the typical on-state resistance of the switch and the specified load capacitance when driven by an ideal voltage source (zero output impedance).
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IDT74CBTLV3861 LOW-VOLTAGE 10-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS TEST CONDITIONS
Symbol VLOAD VIH VT VLZ VHZ CL VCC(1)= 3.3V 0.3V 6 3 1.5 300 300 50 VCC(2)= 2.5V 0.2V 2 x Vcc Vcc VCC/2 150 150 30 Unit V V V mV mV pF
OPPO SITE PHASE INPUT TRANSITION tPLH tPHL
PROPAGATION DELAY
SAM E PHASE INPUT TRANSITION tPLH OUTPUT tPHL VIH VT 0V VOH VT VOL VIH VT 0V
TEST CIRCUITS FOR ALL OUTPUTS
VCC 500 Pulse Generator
(1, 2)
ENABLE AND DISABLE TIMES
ENABLE DISABLE CONTROL INPUT tPZL OUTPUT SW ITCH NORMALLY CLOSED LOW tPZH OUTPUT SW ITCH NORMALLY OPEN HIGH VLOAD/2 VT tPHZ VT 0V tPLZ VIH VT 0V VLOAD/2 VOL + VLZ VOL VOH VOH -V HZ 0V
VLOAD Open GND
VIN D.U.T.
VOUT
RT
500 CL
DEFINITIONS: CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator NOTES: 1. Pulse Generator for All Pulses: Rate 1.0MHz; tF 2.5ns; tR 2.5ns 2. Pulse Generator for All Pulses: Rate 1.0MHz; tF 2ns; tR 2ns
NOTE: 1. Diagram shown for input Control Enable-LOW and input Control Disable HIGH
SWITCH POSITION
Test
tPLZ/tPZL tPHZ/tPZH tPD
Switch VLOAD GND Open
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IDT74CBTLV3861 LOW-VOLTAGE 10-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDT XX CBTLV XXX Device Type XX Package Temp. R ange
PY Q PG
Shrink Small Outline Package (SO24-7) Quarter-size Small Outline Package (SO24-8) Thin Shrink Small Outline Package (SO24-9)
3861
Low-Voltage 10-Bit Bus Switch
74
-40C to +85C
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for Tech Support: logichelp@idt.com (408) 654-6459
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